This add-on contains helper for Viritin users who are upgrading to Vaadin 8 and want to do that with minimal effort. The package contains all old components and helpers that require vaadin-compatibility-server package. To use them, you'll need to replace all package names so that for example MTextField compatible with v7 stuff is imported from org.vaadin.viritinv7.fields instead of org.vaadin.viritin.fields